A) 75.8
B) 80.0
C) 56.6
D) 28.6
Correct Answer: B
Solution :
% of H \[=\frac{2}{18}\times \frac{\text{wt}\text{.of}\,{{H}_{2}}O}{\text{wt}\text{. of organic compound}}\times 100\] \[=\frac{2}{18}\times \frac{0.9}{0.5}\times 100=20\,%\] Since percentage of hydrogen is 20. Therefore, remaining is carbon i.e. 80 %.
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